first commit.

plugin/brightest.vim

@@ -0,0 +1,68 @@
+scriptencoding utf-8
+if exists('g:loaded_brightest')
+  finish
+endif
+let g:loaded_brightest = 1
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+let g:brightest_pattern = get(g:, "brightest_pattern",  '')
+" let g:brightest_pattern = get(g:, "brightest_pattern",  '\k\+')
+" let g:brightest_highlight_group = get(g:, "brightest_highlight_group", "WarningMsg")
+" let g:brightest_highlight_group_in_cursor = get(g:, "brightest_highlight_group_in_cursor", "")
+" let g:brightest_highlight_group_in_cursorline = get(g:, "brightest_highlight_group_in_cursorline", "")
+
+let g:brightest_enable = get(g:, "brightest_enable", 1)
+
+
+let s:highlight_default = {
+\	"group" : "WarningMsg",
+\	"priority" : -1,
+\	"format" : '\<%s\>',
+\}
+let g:brightest_highlight = get(g:, "brightest_highlight", {})
+function! s:highlight()
+	return get(b:, "brightest_highlight", extend(s:highlight_default, g:brightest_highlight))
+endfunction
+
+
+let s:highlight_in_cursorline_default = {
+\	"group" : "",
+\	"priority" : -1,
+\	"format" : '\<%s\>',
+\}
+let g:brightest_highlight_in_cursorline = get(g:, "brightest_highlight_in_cursorline", {})
+function! s:highlight_in_cursorline()
+	return get(b:, "brightest_highlight_in_cursorline", extend(s:highlight_in_cursorline_default, g:brightest_highlight_in_cursorline))
+endfunction
+
+
+function! s:init_hl()
+	highlight BrightestDefaultCursorWord gui=underline guifg=NONE
+	highlight BrightestUnderline term=underline cterm=underline gui=underline
+endfunction
+
+function! s:hl()
+	call brightest#highlight(
+\		get(b:, "brightest_pattern", g:brightest_pattern),
+\		s:highlight(),
+\		s:highlight_in_cursorline(),
+\	)
+endfunction
+
+command! -bar BrightestEnable  let g:brightest_enable = 1 | call s:hl()
+command! -bar BrightestDisable let g:brightest_enable = 0 | call brightest#hl_clear()
+
+
+augroup brightest
+	autocmd!
+	autocmd CursorMoved * call s:hl()
+	autocmd BufLeave,WinLeave,InsertEnter * call brightest#hl_clear()
+	autocmd ColorScheme * call s:init_hl()
+augroup END
+
+
+
+let &cpo = s:save_cpo
+unlet s:save_cpo